Aplicación de técnicas de inteligencia de negocio al seguimiento del aprendizaje en MERLÍN

Este artículo propone la aplicación de técnicas de inteligencia de negocio para el seguimiento de alumnos en la plataforma educativa MERLIN, basada en portlets. Se hace una revisión de las funcionalidades de seguimiento existentes en las plataformas de e-learning más populares y se propone un módulo de seguimiento integrado basado en código abierto. Este módulo desarrolla un panel de control del estudiante que permite analizar su progreso desde diferentes perspectivas, que se componen con tecnología de portlets

Energy Firms in Emerging Markets: Systemic Risk and Diversification Opportunities

Previous studies in energy stock markets have analyzed market connectedness using aggregate indexes and focusing on developed markets. We depart from the extant literature and we focus our attention on companies listed on emerging stock markets and examine connectedness from the firm’s perspective. Using a two-step approach, we remove the common global factors from energy stock returns and estimate the network of global energy stocks in emerging markets. We show that idiosyncratic components are highly relevant for our understanding of risk transmission in energy markets. Moreover, we offer precise diversification alternatives and identify the most systemically important firms and countries

Elementary School in the Province of Caceres. Torrejoncillo: 1945- 2015

El trabajo que se presenta es una investigación de corte cualitativo a través del análisis de la Educación Primaria en Torrejoncillo (Cáceres) desde una perspectiva históricoeducativa. Para que se pueda comprender la historia educativa contemporánea, es muy importante conocer su pasado. Igualmente, la comunidad científica se inclina por recuperar la historia educativa local y regional, con el único propósito de saber más acerca del conocimiento histórico-educativo más cercano. El objetivo de este trabajo es conocer el pasado educativo de este pueblo cacereño, haciendo un recorrido en el tiempo desde mediados del siglo XX, concretamente a partir de 1945, cuando la escuela estaba dividida en varias unidades repartidas por Torrejoncillo y donde las condiciones no eran las más favorables, hasta llegar a nuestros días.The work presented is a qualitative research through analysis of primary education in Torrejoncillo (Cáceres) from a historical and educational perspective. To be able to understand contemporary educational history, it is very important to know your past. Similarly, the scientific community is inclined to retrieve local and regional educational history, with the sole purpose of knowing more about the closest historical-educational knowledge. The aim of this study was to determine the educational background of the people Caceres, making a journey through time from the mid-twentieth century, particularly after 1945, when the school was divided into several units distributed in Torrejoncillo and where conditions were not the most favorable, until our days.peerReviewe

Impacto de la inversión extranjera directa en el crecimiento económico de largo plazo de la economía peruana en el período 1980 - 2021

La presente tesis titulada “Impacto de la Inversión Extranjera Directa en el crecimiento económico de largo plazo de la economía peruana en el período 1980 - 2021 tuvo como objetivo determinar el impacto de la Inversión Extranjera Directa en el crecimiento económico de largo plazo de la economía peruana. La investigación es correlacional explicativa y no experimental, ya que se pretende que sirva como apoyo para las políticas. Las variables que se usaron son el PBI y la IED. Usando datos históricos provenientes del Banco Central de Reserva del Perú (BCRP) y series estadísticas del Banco Mundial (BM). Basada en la teoría que plantean que la inversión extranjera directa mejora el crecimiento económico. Se estimó un modelo de Mínimos Cuadrados Ordinarios con ponderaciones, luego de esto se puede observar que las variables independientes explican en un 98.78% a la variable dependiente. Los resultados del modelo econométrico nos indica que la inversión extranjera directa tuvo un impacto positivo en el crecimiento económico de Perú en el periodo 1980-2021, por cada aumento de $1 de la IED, el crecimiento económico en el Perú aumenta en S/.4.82. Con este resultado corroboramos que a mayor IED mayor crecimiento económico, pero se debe gestar adecuadamente.The present thesis entitled ""Impact of Foreign Direct Investment on the long term economic growth of the Peruvian economy in the period 1980 - 2021 had the objective of determining the impact of Foreign Direct Investment on the long-term economic growth of the Peruvian economy. The research is explanatory correlational and non-experimental, since it is intended to serve as support for policies. The variables used are GDP and FDI. Using historical data from the Central Reserve Bank of Peru (BCRP) and statistical series from the World Bank (WB). Based on the theory that foreign direct investment improves economic growth. An Ordinary Least Squares model with weights was estimated, after which it can be observed that the independent variables explain 98.78dependent variable. The results of the econometric model indicate that foreign direct investment had a positive impact on Peru's economic growth in the period 1980-2021, for every$1 increase in FDI, economic growth in Peru increases by S/. 4.82. With this result we corroborate that the higher the FDI, the higher the economic growth, but it must be properly managed.Tesi

A new species of Enyalioides (Iguanidae: Hoplocercinae) from southwestern Ecuador

We describe a new species of Enyalioides from lowland cloud forests in southwestern Ecuador. This represents the third species in the genus known to occur west of the Andes in South America; the other two species are E. heterolepis and E. oshaughnessyi. Among other characters, the new species can be distinguished from other members in the genus by having small, keeled, paravertebrals; a series of skin folds on the lateral aspects of body and neck; size-homogeneous scales on body and limbs; distinct caudal segments; and an extensive dark patch on the gular region of adult males. Morphological similarity suggests that the new species, which we call E. touzeti, is closely related to E. oshaughnessyi.Describimos una especie nueva de Enyalioides del bosque nublado al suroccidente de Ecuador. Esta representa la tercera especie de este género que habita al occidente de los Andes en América del Sur; las otras dos especies occidentales son E. heterolepis y E. oshaughnessyi. La especie nueva se diferencia de otras especies del género por tener, entre otras características, paravertebrales pequeñas y quilladas, pliegues dermales a los lados del cuello y cuerpo, escamas homogéneas en el cuerpo y extremidades, segmentos caudales visibles, y un parche oscuro que cubre gran parte de la región gular en machos. Semejanzas morfológicas sugieren que la especie nueva, a la cual llamamos E. touzeti, está cercanamente relacionada con E. oshaughnessyi

Estimation of the optimum speed to minimize the driver stress based on the previous behavior

Proceedings of 7th International Symposium on Ambient Intelligence (ISAmI 2016), Seville, Spain on June 1st–3rdStress is one of the most important factors in car accidents. When the driver is in this mental state, their skills and abilities are reduced. In this paper, we propose an algorithm to predict stress level on a road. Prediction model is based on deep learning. The stress level estimation considers the previous driver's driving behavior before reaching the road section, the road state (weather and traffic), and the previous driving made by the driver. We employ this algorithm to build a speed assistant. The solution provides an optimum average speed for each road stage that minimizes the stress. Validation experiment has been conducted using five different datasets with 100 samples. The proposal is able to predict the stress level given the average speed by 84.20% on average. The system reduces the heart rate (15.22%) and the aggressiveness of driving. The proposed solution is implemented on Android mobile devices and uses a heart rate chest strap.The research leading to these results has received funding from the “HERMES-SMART DRIVER/CITIZEN” projects TIN2013-46801-C4-2-R /1-R funded by the Spanish MINECO, from the grant PRX15/00036 from the Ministerio de Educación Cultura y Deporte

Design of a Speed Assistant to Minimize the Driver Stress

Stress is one of the most important factors in traffic accidents. When the driver is in this mental state, their skills and abilities are reduced. In this paper, we propose an algorithm to estimate the optimal speed to minimize stress levels on upcoming road segments when driving. The prediction model is based on deep learning. The stress level estimation considers the previous driver's driving behavior before reaching the road section to be assessed, the road state (weather and traffic), and the previous drives made by the driver. We use this algorithm to build a speed assistant. The solution provides an optimum average speed for each road segment that minimizes the stress. A validation experiment has been conducted in a real setting using two different types of vehicles. The proposal is able to predict the stress levels given the average speed by 84.20% on average. On the other hand, the speed assistant reduces the stress levels (estimated from the driver’s heart rate signal) and the aggressiveness of driving regardless of the vehicle type. The proposed solution is implemented on Android mobile devices and uses a heart rate chest strap

Synthesis, Characterization and Antitumor Activity of cis-bis(acylthioureato) platinum(II) Complexes, cis-[PtL2] [HL1=N,N-Diphenyl-N'-Benzoylthiourea or HL2=N,N-diphenyl-N'-(p-nitrobenzoyl)thiourea]

A low-molecular weight chromium-containing fraction of the material resulting from dichromate reduction by bovine liver homogenate was investigated by NMR and ES-MS. The ES-MS spectrum showed a readily detectable peak at m/z 786.1. The same molecular weight reasonably agreed with the relatively low diffusion coefficient measured by NMR-DOSY experiments on the main species observed in the 1H NMR spectrum. At least two downfield shifted and broad paramagnetic signals were apparent in the 1H NMR spectrum. Temperature dependence of chemical shift was exploited in order to estimate the diamagnetic shift of the signals in the diamagnetic region of the spectrum. 2D TOCSY, NOESY, COSY and 1H-13C HMQC spectra revealed the presence of aromatic protons (which were assigned as His residues), Gly and some other short chain amino-acids. Combinations of the molecular masses of such components together with acetate (which is present in the solution) and chromium atoms allowed a tentative proposal of a model for the compound

Discovery of distant RR Lyrae stars in the Milky Way using DECam

We report the discovery of distant RR Lyrae stars, including the most distant known in the Milky Way, using data taken in the $g-$band with the Dark Energy Camera as part of the High cadence Transient Survey (HiTS; 2014 campaign). We detect a total of 173 RR Lyrae stars over a ~120 deg^2 area, including both known RR Lyrae and new detections. The heliocentric distances d_H of the full sample range from 9 to >200 kpc, with 18 of them beyond 90 kpc. We identify three sub-groups of RR Lyrae as members of known systems: the Sextans dwarf spheroidal galaxy, for which we report 46 new discoveries, and the ultra-faint dwarf galaxies Leo IV and Leo V. Following an MCMC methodology, we fit spherical and ellipsoidal profiles of the form rho(R) ~ R^n to the radial density distribution of RR Lyrae in the Galactic halo. The best fit corresponds to the spherical case, for which we obtain a simple power-law index of n=-4.17^{+0.18}_{-0.20}, consistent with recent studies made with samples covering shorter distances. The pulsational properties of the outermost RR Lyrae in the sample (d_H>90 kpc) differ from the ones in the halo population at closer distances. The distribution of the stars in a Period-Amplitude diagram suggest they belong to Oosterhoff-intermediate or Oosterhoff II groups, similar to what is found in the ultra-faint dwarf satellites around the Milky Way. The new distant stars discovered represent an important addition to the few existing tracers of the Milky Way potential in the outer halo.Comment: Accepted for publication in The Astrophysical Journa

Legal medical identification of cases with suspicion: survey of perícias of the Legal Medical Institute of São Paulo, in the decade of 90

Os autores realizaram o levantamento de casos de identificação médico legal, com suspeita de ser determinada pessoa, analisados pelo Núcleo de Antropologia do Instituto Médico Legal do Estado de São Paulo, no período de janeiro de 1990 a dezembro de 2000. O levantamento foi realizado através dos laudos médico-legais com o objetivo de obter dados sobre este tipo de perícia, praticamente inexistentes na literatura, bem como verificar os fatores que influenciaram na identificação ou não deste tipo de caso. Resultados: o número total de casos foi de 169, sendo que 125 (73,06%) eram cadáveres putrefeitos ou esqueletizados e 44 (26,03%) carbonizados. Em relação à causa de morte em 93 (55,35%) não foi possível estabelecer a causa de morte e em 39 (23,21%) a morte ocorreu devido a traumatismo crânio encefálico. A identificação resultou positiva em 81 casos (47,9%), utilizando-se os métodos odontológicos em 39 casos (60%), genético em 13 (20%), antropológico em 9 (13,84%) e dactiloscópico em 4 casos (6,15%). Em 88 casos (52,07%) não foi possível resultado conclusivo, atribuindo-se a isto a ausência de elementos de confronto, o qual esteve presente em 82 casos (93,18%). Conclusão: a identificação médico legal depende de elementos de confronto, fornecidos, principalmente pelos familiares, sem os quais não é possível obter um resultado positivo na perícia de identificação médico-legal.The authors had carried through the survey of cases of legal medical identification, with suspicion of being determined person, analyzed for the Nucleus of Anthropology of the Legal Medical Institute of the State of São Paulo, in the period of January of 1990 the December of 2000. The survey was carried through the legal findings medical with the objective to get given on this type of skill, practically inexistent in literature, as well as verifying the factors that had influenced in the identification or not of this type of case. Results: the total number of cases was of 169, being that 125 (73,06%) were bodies in decomposition or skeletons and 44 (26,03%) carbonized. In relation to the cause of death in 93 (55,35%) it was not possible to establish the death cause and in 39 (23,21%) the death occurred due to brain injury. The identification resulted positive in 81 cases (47,9%), using the odontologic methods in 39 cases (60%), genetic in 13 (20%), anthropologic in 9 (13,84%) and fingerprints in 4 cases (6,15%). In 88 cases (52,07%) it was not possible conclusive result, attributing this to it the absence of confrontation elements, which were present in 82 cases (93,18%). Conclusion: the legal medical identification depends on confrontation elements, supplied, mainly for the familiar ones, without which it is not possible to get a positive result in the skill of legal medical identification